Ventilating apparatus



March 2 1926. 1,575,447

c. A. MOORE VENTILATING APPARATUS Filed March 18, 1924 Ira/ min?"7247761517007? citizen of the United States,

Patented Mar. 1926.

CHARLES A. MOORE, OFST. PAUL, MINNESOTA.

vnn'rrtarme APPARATUS.

Application filed March 18, 1924. Serial No: 700,061.

To all whom it may concern Be it known that I, CHARLEs A. Moore, aresiding in St. Paul, in the county of Ramsey and State of Minnesota,have invented a new and useful Ventilating Apparatus, of which thefollowing is a specification.

My invention relates to improvements in ventilating apparatus.

Its object is to provide a simple, durable and inexpensive apparatus ofthe present nature, the same being adapted to be readily installed in abuilding and to operate effectively not only in expelling foul airtherefrom, but also in supplying fresh air thereto.

Another object is to provide for such results in an apparatus employinga single fan of conventional design.

With the foregoing and other objects in View, which will'appear in thefollowing description, the invention resides in the novel combinationand arrangement of parts and in the details of construction hereinafterdescribed and claimed.

7 In thedrawings, Fig. 1 is a vertical, central sectional View of adevice embodying my invention, the same being shown in connection with aroom structure; Fig. 2 is a horizontal, central sectional View of thedevice shown in Fig. .1 and Fig. 3 is a rear elevational view of thesame.

Referring to the drawings, it will be observed that the illustratedembodiment of my invention constitutes a unitary structure arrangedagainst the inner wall of a room and adapted to set up a ventilatingcirculation of air therein.

The improvement includes a unitary casting consisting of a centralconduit 10, a ring 11 encircling said conduit and a rim l2 encirclingsaid ring, the conduit 10 and ring 11 being united by an annular web 13,and the rim 12, in turn, united with the ring 11 through the medium ofducts 14, 15. This casting, just described, is placed in a wall 16 of aroom. as shown :in Fig. 1, the outer margin of the rim 12 being fittedin a circular opening 17 in the wall 16. Capping the rim 12 and ring 11is a cover plate '18, said plate being formed with a central aperture 19therein, which registers with the inner opening of the central conduit10. A motor 20, secured centrally of the aperture 19 by means of braces21 reaching radially therefrom and attached at their outer ends to saidplate 18, carries a fan B on the shaft 22 thereof, said fan being ofconventional design and consisting of radial blades 23 similarlypitched. The fan blades 23 turn in the limited space between the innerend of the conduit 10 and the cover plate'18, the ends of said blades 23projecting beyond the diametrical limits of said conduit. It will now beobserved that the inner opening 'of the central conduit 10 embraces acircular, central area of the fan 13 at one side thereof and that anannular area of said fan at itsopposite side is embraced by an opening24 that amounts to a second conduit in the combination of the run 12,ring 11 and cover plate 18. Said opening 24 is formed between the ring11 and the inner flange 18 of the cover plate 18..

From the foregoing, it will be under stood that the fan B, turning inone direction, will draw air from without through the conduit 10 and thecenter of the fan and force said air into the room; also that said fan.will draw air from the roomthrough the ducts 14, 15 and the margin ofthe fan and force said air to the outside through the conduit formed bythe rim 12, ring 11' and cover plate 18. Turning in the oppositedirection, said fan B withdraws air from the room and expels it to theouter air through the center of the fan, while air is drawn' from theoutside into the conduit formed by the rim 12, ring 11 and cover plate18 and thence forced into the room through the ducts .11, 15. I v

Communicating with the ducts 14, 15 are "pipes 25, 26, said pipes beingfitted. with dampers 27, 28 and providing for the Withdrawal orintroduction of air from and to the room at the ceiling of floorthereof, as may be desired.

Among the several advantages making for eifective ventilation, andcompactness, simplicity andlow cost of construction, the singleconventional fan serving the dual purposes hereinbefore described is animportant feature.

Changes in the specific form-of my invention, as herein disclosed, maybe made within the scope of what is claimed without departing from thespirit of my invention.

' Patent is:

1. Thecombination with a room-and ventilating fan therefor having radialblades,

a conduit opening at its outer end into the outer atmosphere and at itsinner end in close proximity to the fan, said inner end of said conduitbeing proportioned to embrace a portion of the area of said fan, asecond conduit opening at its outer end into the outer atmosphere and atits inner end adjacent to the fan said inner opening of said secondconduit being arran edin opposition to the inner opening said firstconduit and proportioned to embrace a different portion of the area ofthe fan, and a duct leading from a part of the room removed from saidfan to the side-of the fan opposite said inner opening of said second'conduit.

conduit. I I

2.'The combination with a room and a fan therein having radial bladessimilarly pitched, a conduit opening at its outer end into the outeratmosphere and at its inner end in close proximity to the fan, .saidinner end of said conduit being proportioned to embrace a central areaof said fan, and a second conduit, opening at its outer end into theouter atmosphere and at its inner end adjacent to the fan, said inneropening of said second conduit being arran 'ed in opposition to theinner opening" 0 said first conduit and proportioned, to embrace theouter area of the fan bounding said central area, and a duct leadingfrom a part of the v room removed fromsaid fan to the side of the fanopposite said inner opening of said jacent to the fan, said inneropening of said second conduit being arranged in opposition to the inneropening ofsaid first conduit and proportioned to embrace the outer areaof the fan bounding said central area and valved ducts leading fromparts of the room removed from said fan to the side of the fan oppositesaid .inner opening of said second i 4. The combination with a roomand afan therein having radial blades, each uniformly pitched from end to endthereof, ofan air ingress conduit opening adjacent to one side of saidfan and embracinga'portion only of the area thereof and an air egressconarea of the opposite side of the fan em braced by the opening of saidingress conduit. Y 7 I In testimony whereof, I: have name to thisspecification.

. j ed y 4 duit opening adjacent to the other side of CHARLES Moons.

